Bone-conducted speech is of low intelligibility, but its quality is not affected by noise. In this paper, we take into account such propertes of bone-conducted speech, and address a digital filter to reconstruct the quality of the bone-conducted speech signal obtained from a speaker. The reconstruction filter design method is derived based on a model assumption of pronunciation. Experimental re...

The role of speech coding is to reduce the bit rate by maintaining good speech quality. In order to improve the perceptual quality of degraded speech, different speech enhancement methods can be used. So, it is worthwhile to do research in joint systems (Speech Enhancement and Low bit rate speech coders). The work reported in this paper shows the improvement in the perceptual quality of speech ...

We give an overview of speech quality measures and apply them to the typical shortcomings of speech enhancement algorithms. This is important for comparing different approaches to noise reduction, and it suggests ways to improve a speech enhancement algorithm. Objective quality measures are compared to the subjective quality evaluation of human listeners by means of extensive listening tests. A...

The intrusive speech quality model standardized by the ITU–T shows some limits in its quality predictions, especially in a wideband transmission context. They are mainly caused by strong differences in perceived quality when speech is transmitted over different telephone networks. Instrumental methods should provide reliable estimations of the integral speech quality over the entire perceptual ...

Speech quality models usually estimate the integral quality of the degraded speech files. Such quality values do not inform system developers and telephone service providers on the perceived degradation introduced by the system under study. This paper describes a new intrusive speech quality model, called Diagnostic Instrumental Assessment of Listening quality (DIAL), providing diagnostic infor...

In this paper we present a flexible deterministic plus stochastic model (DSM) approach for parametric speech analysis and synthesis with high quality. The novelty of the proposed speech processing system lies in its extended means to estimate the unvoiced stochastic component and to robustly handle the transformation of the glottal excitation source. It is therefore well suited as speech system...

background and aim : the hearing loss and acoustic feedback signal in the binaural hearing aids may annoy users, make speech reorganization difficult, and affect the sound quality. this paper presents a new method for acoustic feedback suppression in binaural hearing aids, based on the combination of binaural information and blind source separation. this method can enhance sound from the specif...

A common suggested treatment for verbal apraxia is repetition, and the use of slow speech. The required slow speech may be attained by time-scaling ordinary-speed speech. However, when used for this purpose, the quality of the expanded speech must be of a very high quality to be of pedagogical benefit. This paper describes a new method of time-scaling based on the knowledge of speech characteri...